2216737 has 4 divisors (see below), whose sum is σ = 2219796. Its totient is φ = 2213680.

The previous prime is 2216729. The next prime is 2216743. The reversal of 2216737 is 7376122.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1752976 + 463761 = 1324^2 + 681^2 .

It is a cyclic number.

It is not a de Polignac number, because 2216737 - 2³ = 2216729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2216777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243 + ... + 2119.

It is an arithmetic number, because the mean of its divisors is an integer number (554949).

2^2216737 is an apocalyptic number.

It is an amenable number.

2216737 is a deficient number, since it is larger than the sum of its proper divisors (3059).

2216737 is a wasteful number, since it uses less digits than its factorization.

2216737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3058.

The product of its digits is 3528, while the sum is 28.

The square root of 2216737 is about 1488.8710488152. The cubic root of 2216737 is about 130.3881299808.

The spelling of 2216737 in words is "two million, two hundred sixteen thousand, seven hundred thirty-seven".